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Delaware County
County
Delaware County Courthouse in Media, Pennsylvania
Delaware County Courthouse in Media, Pennsylvania
Flag of Delaware County
Flag
Official seal of Delaware County
Seal
Map of Pennsylvania highlighting Delaware County
Location within the U.S. state of Pennsylvania
Map of the United States highlighting Pennsylvania
Pennsylvania's location within the U.S.
Country  United States
State  Pennsylvania
Founded September 26, 1789
Named for Delaware River
Seat Media
Largest Township Upper Darby
Other cities Chester
Area
 • Total 191 sq mi (490 km2)
 • Land 184 sq mi (480 km2)
 • Water 6.8 sq mi (18 km2)  3.5%%
Population
 (2020)
 • Total 576,830
 • Density 3,020/sq mi (1,166.0/km2)
Congressional district 5th
Pennsylvania Historical Marker
Designated: October 3, 1982


Delaware County, colloquially referred to as Delco, is a county in the Commonwealth of Pennsylvania. With a population of 576,830 as of the 2020 census, it is the fifth-most populous county in Pennsylvania and the third-smallest in area. The county was created on September 26, 1789, from part of Chester County and named for the Delaware River. The county is part of the Southeast Pennsylvania region of the state.

Delaware County borders Philadelphia, the nation's sixth-most populous city, to its northeast. It also is adjacent to the city-county of Philadelphia County and is included in the PhiladelphiaCamdenWilmington, PA–NJDEMD metropolitan statistical area. Its county seat is Media.

History

Map of the early settlements of Delaware County, Penna
Map of the early settlements of Delaware County, Pennsylvania
Chester Courthouse 1724
The old Chester Courthouse, built in 1724

Delaware County lies in the river and bay drainage area named "Delaware" in honor of Thomas West, 3rd Baron De La Warr, Governor of the nearby English colony of Virginia. The land was explored by Henry Hudson in 1609, and over the next several decades it was variously claimed and settled by the Swedes, the Dutch, and the English. Its original human inhabitants were the Lenape tribe of American Indians.

Once the Dutch were defeated and the extent of New York was determined, King Charles II of England made his grant to William Penn to found the colony which came to be named Pennsylvania. Penn divided his colony into three counties: Bucks, Philadelphia, and Chester. The riverfront land south of Philadelphia, being the most accessible, was quickly granted and settled. In 1789, the southeastern portion of Chester County was divided from the rest and named Delaware County for the Delaware River.

Geography

NewlinMill
Newlin Mill, built 1704, on the west branch of Chester Creek, near Concordville

According to the U.S. Census Bureau, the county has a total area of 191 square miles (490 km2), of which 184 square miles (480 km2) is land and 6.8 square miles (18 km2) (3.5%) is water. It is the third-smallest county in Pennsylvania by area.

Delaware County is roughly diamond- or kite-shaped, with the four sides formed by the Chester County boundary to the northwest, the boundary with the state of Delaware, a portion of the "Twelve-Mile Circle") to the southwest, the Delaware River, forming the border with the state of New Jersey) to the southeast, and the city of Philadelphia and Montgomery County to the east and northeast.

The lowest point in the state of Pennsylvania is located on the Delaware River in Marcus Hook in Delaware County, where it flows out of Pennsylvania and into Delaware. The highest point in Delaware County is 500 feet at two points southeast of Wyola in Newtown Township.

Waterways in Delaware County generally flow in a southward direction and ultimately drain into the Delaware River. The waterways are, from west to east: the Brandywine River (forming a portion of the county's western boundary with Chester County), Naaman's Creek, Stoney Creek, Chester Creek, Ridley Creek, Crum Creek, Muckinipates Creek, Darby Creek and Cobbs Creek (forming a portion of the county's eastern boundary with Philadelphia). Crum Creek was dammed in 1931 near Pennsylvania Route 252 to fill Springton Lake (also known as Geist Reservoir), an approximately 391-acre (1.58 km2) drinking water reservoir maintained by Aqua America, the county's largest lake.

The Trainer Refinery and the Port of Chester are located along the shores of the Delaware River.

With its location in the southeastern part of the state, Delaware County is the only county to border both Delaware and New Jersey.

Adjacent counties

Delaware County is one of four counties in the United States to border a state with which it shares the same name (the other three are Nevada County, California, Texas County, Oklahoma, and Ohio County, West Virginia).

National protected areas

TinicumNWR
John Heinz National Wildlife Refuge

State protected area

2,600 acres (11 km2) of the county are occupied by the Ridley Creek State Park.

Demographics

Historical population
Census Pop.
1790 9,469
1800 12,809 35.3%
1810 14,734 15.0%
1820 14,810 0.5%
1830 17,323 17.0%
1840 19,791 14.2%
1850 24,679 24.7%
1860 30,597 24.0%
1870 39,403 28.8%
1880 56,101 42.4%
1890 74,683 33.1%
1900 94,762 26.9%
1910 117,906 24.4%
1920 173,084 46.8%
1930 280,264 61.9%
1940 310,756 10.9%
1950 414,234 33.3%
1960 553,154 33.5%
1970 600,035 8.5%
1980 555,007 −7.5%
1990 547,651 −1.3%
2000 550,864 0.6%
2010 558,979 1.5%
2020 576,830 3.2%
U.S. Decennial Census
1790–1960 1900–1990
1990–2000 2010–2019

As of the 2020 census, the county was 63% White non-Hispanic, 22% Black or African American, 0.1% Native American or Alaskan Native, 6.3% Asian, 4.6% Hispanic or Latino, 0.1% Native Hawaiian, and 3.5% were two or more races.

As of the 2000 census, there were 550,864 people, 206,320 households, and 139,472 families residing in the county. The population density was 2,990 inhabitants per square mile (1,150/km2). There were 216,978 housing units at an average density of 1,178 per square mile (455/km2). The racial makeup of the county was 80.3% White, 14.5% African American, 0.1% Native American, 3.3% Asian, <0.1% Pacific Islander, 0.6% from other races, and 1.2% from two or more races. 1.5% of the population were Hispanic or Latino of any race. 24.6% were of Irish, 17.5% Italian, 10.1% German and 6.7% English ancestry.

There were 206,320 households, out of which 31.5% had children under the age of 18 living with them, 50.8% were married couples living together, 12.9% had a female householder with no husband present, and 32.4% were non-families. 27.6% of all households were made up of individuals, and 11.6% had someone living alone who was 65 years of age or older. The average household size was 2.56 and the average family size was 3.17.

In the county, the population was spread out, with 24.8% under the age of 18, 8.9% from 18 to 24, 28.8% from 25 to 44, 21.9% from 45 to 64, and 15.6% who were 65 years of age or older. The median age was 37 years. For every 100 females there were 91.2 males. For every 100 females age 18 and over, there were 86.9 males.

The median income for a household in the county was $50,092, and the median income for a family was $61,590. Males had a median income of $44,155 versus $31,831 for females. The per capita income for the county was $25,040. About 5.8% of families and 8.0% of the population were below the poverty line, including 10.0% of those under age 18 and 7.1% of those age 65 or over.

2020 census

Delaware County Racial Composition
Race Num. Perc.
White (NH) 363,249 63%
Black or African American (NH) 127,055 22%
Native American (NH) 676 0.12%
Asian (NH) 36,317 6.3%
Pacific Islander (NH) 133 0.02%
Other/Mixed (NH) 22,628 3.9%
Hispanic or Latino 26,772 4.6%

Communities

Map of Delaware County Pennsylvania With Municipal and Township Labels
Map of Delaware County, Pennsylvania with municipal labels showing cities (yellow), boroughs (red), townships (white), and census-designated places (blue)

Under Pennsylvania law, there are four types of incorporated municipalities: cities, boroughs, townships, and exactly one town. There are 49 municipalities in Delaware County:

City

Boroughs

Townships

Census-designated places

Census-designated places are geographical areas designated by the U.S. Census Bureau for the purposes of compiling demographic data. They are not actual jurisdictions under Pennsylvania law. Other unincorporated communities, such as villages, may be listed here as well.

Unincorporated communities

Population ranking

The population ranking of the following table is based on the 2020 census of Delaware County.

county seat

Rank City/Town/etc. Municipal type Population (2020 Census) Total Area Population Density
1 Upper Darby Township 85,681 7.83 sq mi 10,942.7/sq mi
2 Haverford Township 50,431 9.95 sq mi 5,068.4/sq mi
3 Radnor Township 33,228 13.79 sq mi 2,409.6/sq mi
4 Chester City 32,605 6.00 sq mi 5,434.2/sq mi
5 Ridley Township 31,053 5.31 sq mi 5,848.0/sq mi
6 Drexel Hill CDP 29,181 3.20 sq mi 9,119.1/sq mi
7 Springfield Township 25,070 6.34 sq mi 3,954.3/sq mi
8 Marple Township 24,214 10.52 sq mi 2,301.7/sq mi
9 Concord Township 18,295 13.64 sq mi 1,341.3/sq mi
10 Upper Chichester Township 16,898 6.70 sq mi 2,531.6/sq mi
11 Aston Township 16,791 5.84 sq mi 2,880.3/sq mi
12 Middletown Township 16,373 13.47 sq mi 1,215.5/sq mi
13 Newtown Township 15,002 10.09 sq mi 1,486.8/sq mi
14 Nether Providence Township 14,525 4.72 sq mi 3,077.3/sq mi
15 Ardmore (partially in Montgomery County) CDP 13,566 1.97 sq mi 6,886.3/sq mi
16 Yeadon Borough 12,054 1.59 sq mi 7,581.1/sq mi
17 Broomall CDP 11,718 3.17 sq mi 3,696.5/sq mi
18 Lansdowne Borough 11,107 1.18 sq mi 9,412.7/sq mi
19 Upper Providence Township 10,852 5.81 sq mi 1,867.8/sq mi
20 Darby Borough 10,715 0.84 sq mi 12,756.0/sq mi
21 Woodlyn CDP 9,685 1.7 sq mi 5,697.1/sq mi
22 Bethel Township 9,574 5.41 sq mi 1,769.7/sq mi
23 Darby Township 9,219 1.42 sq mi 6,492.3/sq mi
24 Collingdale Borough 8,908 0.87 sq mi 10,239.1/sq mi
25 Brookhaven Borough 8,300 1.71 sq mi 4,882.4/sq mi
26 Folsom CDP 8,287 1.25 sq mi 6,629.6/sq mi
27 Villanova (partially in Montgomery County) CDP 8,213 2.09 sq mi 3,929.7/sq mi
28 Village Green-Green Ridge CDP 8,000 1.9 sq mi 4,210.5/sq mi
29 Glenolden Borough 7,223 0.97 sq mi 7,446.4/sq mi
30 Ridley Park Borough 7,186 1.08 sq mi 6,653.7/sq mi
31 Wayne CDP 7,160 2.12 sq mi 3,377.4/sq mi
32 Thornbury Township 6,904 9.27 sq mi 744.8/sq mi
33 Clifton Heights Borough 6,863 0.63 sq mi 10,893.7/sq mi
34 Folcroft Borough 6,792 1.42 sq mi 4,783.1/sq mi
35 Swarthmore Borough 6,543 1.40 sq mi 4,673.6/sq mi
36 Prospect Park Borough 6,427 0.74 sq mi 8,685.1/sq mi
37 Sharon Hill Borough 6,014 0.77 sq mi 7,810.4/sq mi
38 Norwood Borough 5,943 0.82 sq mi 7,247.6/sq mi
39 Media Borough 5,901 0.77 sq mi 7,663.6/sq mi
40 Bryn Mawr (mostly in Montgomery County) CDP 5,879 0.96 sq mi 6,124.0/sq mi
41 Boothwyn CDP 4,968 1.25 sq mi 3,974.4/sq mi
42 Edgmont Township 4,283 9.73 sq mi 440.2/sq mi
43 Aldan Borough 4,244 0.60 sq mi 7,073.3/sq mi
44 Chester Township 4,080 1.43 sq mi 2,853.1/sq mi
45 Tinicum Township 3,983 8.78 sq mi 453.6/sq mi
46 Chadds Ford Township 3,972 8.72 sq mi 455.5/sq mi
47 Linwood CDP 3,949 0.65 sq mi 6,075.4/sq mi
48 St. Davids CDP 3,604 1.5 sq mi 2,402.7/sq mi
49 Rosemont (mostly in Montgomery County) CDP 3,507 0.82 sq mi 4,276.8/sq mi
50 Lower Chichester Township 3,425 1.07 sq mi 3,200.9/sq mi
51 Upland Borough 3,068 0.65 sq mi 4,720.0/sq mi
52 Chester Heights Borough 2,897 2.22 sq mi 1,305.0/sq mi
53 Morton Borough 2,778 0.36 sq mi 7,716.7/sq mi
54 Lima CDP 2,745 1.47 sq mi 1,867.3/sq mi
55 East Lansdowne Borough 2,714 0.21 sq mi 12,923.8/sq mi
56 Colwyn Borough 2,474 0.26 sq mi 9,515.4/sq mi
57 Eddystone Borough 2,459 1.52 sq mi 1,617.8/sq mi
58 Marcus Hook Borough 2,454 1.62 sq mi 1,514.8/sq mi
59 Parkside Borough 2,321 0.21 sq mi 11,052.4/sq mi
60 Trainer Borough 1,976 1.38 sq mi 1,431.9/sq mi
61 Haverford College (partially in Montgomery County) CDP 1,497 0.31 sq mi 4,829.0/sq mi
62 Chadds Ford (mostly in Chester County) CDP 1,476 2.28 sq mi 647.4/sq mi
63 Millbourne Borough 1,212 0.07 sq mi 16,378.4/sq mi
6 Rose Valley Borough 1,017 0.73 sq mi 1,393.2/sq mi
65 Dilworthtown (mostly in Chester County) CDP 1,150 0.64 sq mi 1,796.9/sq mi
66 Rutledge Borough 782 0.14 sq mi 5,585.7/sq mi
67 Cheyney University (mostly in Chester County) CDP 565 0.30 sq mi 1,883.3/sq mi

Education

Map of Delaware County Pennsylvania School Districts
Map of Delaware County's school districts

Public school districts

School districts include:

  • Chester Upland School District
  • Chichester School District
  • Garnet Valley School District
  • Haverford Township School District
  • Interboro School District
  • Marple Newtown School District
  • Penn-Delco School District
  • Radnor Township School District
  • Ridley School District
  • Rose Tree Media School District
  • Southeast Delco School District
  • Springfield School District
  • Upper Darby School District
  • Wallingford-Swarthmore School District
  • West Chester Area School District
  • William Penn School District

Note that Delaware County Technical High School takes students from all of the county.

Charter schools

  • Chester Community Charter School
  • Widener Partnership Charter School
  • Chester Charter Scholars Academy

Private schools

In 1963 the Roman Catholic Archdiocese of Philadelphia had 48 Catholic K-8/elementary schools in Delaware County with a total of 39,695 students, which was the highest ever enrollment. From 1971 to 2012, 20 of these schools closed, with ten of them closing from 2003 to 2012. By 2012 there were 28 Catholic K-8/elementary schools in Delaware County with a total of 8,291 students. One notable private school is Friends School Haverford.

Colleges and universities

1909 Cheyney Library
Library at Cheyney University
OldMainWidener
Old Main at Widener University
  • Cabrini University
  • Cheyney University
  • Eastern University
  • Delaware County Community College (locations in Marple Township, Upper Darby and Sharon Hill)
  • Haverford College
  • Neumann University
  • Pendle Hill Quaker Center for Study and Contemplation
  • Pennsylvania Institute of Technology
  • Penn State Brandywine
  • Rosemont College
  • Swarthmore College
  • Villanova University
  • Widener University
  • Williamson College of the Trades

Adult education

  • Haverford Adult School
  • Main Line School Night
  • Senior Community Services Lifelong Learning
  • Delaware County Literacy Council

Libraries

Transportation

2022-10-07 12 00 42 View south along Interstate 95 (Delaware Expressway) from the pedestrian overpass for Crosby Street in Chester, Delaware County, Pennsylvania
I-95 southbound in Delaware County

Delaware County is bisected north to south by Blue Route Interstate 476, which connects I-76 just north of the extreme northern corner of the county to I-95, which parallels the Delaware River along the southeastern edge of the county.

Delaware County is home to SEPTA's 69th Street Transportation Center in Upper Darby, and is served by the Norristown High Speed Line (P&W), two Red Arrow trolley lines, (Routes 101 and 102), four Regional Rail Lines, including the Airport Line, Wilmington/Newark Line, Media/Wawa Line, and Paoli/Thorndale Line), and a host of bus routes.

The western portion of Philadelphia International Airport is located in Delaware County, and the county hosts some airport-related commerce such as Philadelphia's UPS terminal and airport hotels.

Major roads and highways

  • I-95
  • I-476
  • US 1
  • US 13
  • US 30
  • US 202
  • US 322
  • PA 3
  • PA 252
  • PA 261
  • PA 291
  • PA 320
  • PA 352
  • PA 420
  • PA 452
  • PA 491
  • PA 926

Recreation

Parks

RCSPSycMillsDam
Dam on Ridley Creek in Ridley Creek State Park
Rose Tree Tavern 2013
Old Rose Tree Tavern in Rose Tree Park

There is one Pennsylvania state park in Delaware County:

County parks include:

  • Clayton Park & Golf Course
  • Glen Providence Park
  • Kent Park/Dog Park
  • Rose Tree Park
  • Smedley Park
  • Upland Park

Racing

Harrah's Philadelphia is a harness racing track and casino (i.e., "racino") located on the Chester, Pennsylvania waterfront. It is owned by Vici Properties and operated by Caesars Entertainment.

Sports

Chester is home to the Philadelphia Union of Major League Soccer; the team plays at Subaru Park, a venue located at the base of the Commodore Barry Bridge.

Delaware County is the traditional home of women's professional soccer in the Philadelphia area. The former Philadelphia Charge of the defunct Women's United Soccer Association played at Villanova Stadium, which is located on the campus of Villanova University. The Philadelphia Independence of Women's Professional Soccer succeeded the Charge and played at Widener University's Leslie Quick Stadium in 2011.

Delaware County is the home of one of oldest baseball leagues in the country, the Delco League, which at one time was known for featuring future, former, and even current major league players who were offered more money than their current teams would pay them.

Every summer, Delaware County is home to the Delco Pro-Am, a basketball league consisting of current, future, and former NBA players as well as local standout players.

Delaware County is also the former home of a rugby league team called the Aston Bulls, a member of the American National Rugby League.

Darby was home to the Hilldale Club, the 1925 Colored World Series champions.

Media

The county is serviced by several newspapers, including Delaware County Daily Times, News of Delaware County, The Spirit, and The Suburban and Wayne Times.

The Philadelphia Inquirer also has a significant presence in Delaware County. Delaware County Magazine is the news magazine with the largest circulation in Delaware County, reaching over 186,000 homes.

Climate

Delaware County has two physical geographic regions: the Piedmont and the Atlantic Coastal Plain, Most of the county has a humid subtropical climate (Cfa) while some higher northern areas have a hot-summer humid continental climate (Dfa.). The hardiness zone is mostly 7b except for 7a in areas closer to Chester County (except along the Brandywine Creek) and 8a in Ridley Township near the Delaware River. [1]

Climate data for Newtown Square (Elevation: 456 ft; 139 m) 1981–2010 Averages
Month Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Year
Mean daily maximum °F (°C) 38.6
(3.7)
41.8
(5.4)
50.4
(10.2)
62.3
(16.8)
72.1
(22.3)
81.0
(27.2)
85.3
(29.6)
83.5
(28.6)
76.8
(24.9)
65.5
(18.6)
54.1
(12.3)
42.6
(5.9)
62.9
(17.2)
Daily mean °F (°C) 30.4
(−0.9)
33.1
(0.6)
40.6
(4.8)
51.6
(10.9)
61.2
(16.2)
70.5
(21.4)
75.2
(24.0)
73.7
(23.2)
66.3
(19.1)
55.0
(12.8)
44.8
(7.1)
34.6
(1.4)
53.2
(11.8)
Mean daily minimum °F (°C) 22.2
(−5.4)
24.3
(−4.3)
30.9
(−0.6)
40.8
(4.9)
50.2
(10.1)
60.0
(15.6)
65.1
(18.4)
63.8
(17.7)
55.7
(13.2)
44.4
(6.9)
35.5
(1.9)
26.6
(−3.0)
43.4
(6.3)
Average precipitation inches (mm) 3.36
(85)
2.80
(71)
3.89
(99)
3.84
(98)
4.08
(104)
3.94
(100)
4.71
(120)
3.88
(99)
4.65
(118)
3.87
(98)
3.61
(92)
3.89
(99)
46.52
(1,182)
Average relative humidity (%) 68.3 65.0 60.5 59.4 63.2 68.2 68.2 70.5 71.7 70.5 69.7 70.8 67.2
Average dew point °F (°C) 21.2
(−6.0)
22.6
(−5.2)
28.0
(−2.2)
37.9
(3.3)
48.6
(9.2)
59.5
(15.3)
64.0
(17.8)
63.5
(17.5)
56.9
(13.8)
45.6
(7.6)
35.5
(1.9)
26.1
(−3.3)
42.5
(5.8)
Source: PRISM
Climate data for Chester (Elevation: 10 ft; 3.0 m) 1981–2010 Averages
Month Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Year
Mean daily maximum °F (°C) 40.5
(4.7)
44.2
(6.8)
52.0
(11.1)
63.4
(17.4)
73.4
(23.0)
82.7
(28.2)
87.0
(30.6)
85.2
(29.6)
78.3
(25.7)
66.7
(19.3)
56.1
(13.4)
45.0
(7.2)
64.6
(18.1)
Daily mean °F (°C) 33.7
(0.9)
36.5
(2.5)
43.7
(6.5)
54.3
(12.4)
64.1
(17.8)
73.7
(23.2)
78.3
(25.7)
76.8
(24.9)
69.5
(20.8)
58.1
(14.5)
48.3
(9.1)
38.2
(3.4)
56.4
(13.6)
Mean daily minimum °F (°C) 26.8
(−2.9)
28.9
(−1.7)
35.3
(1.8)
45.2
(7.3)
54.8
(12.7)
64.6
(18.1)
69.7
(20.9)
68.4
(20.2)
60.7
(15.9)
49.4
(9.7)
40.5
(4.7)
31.4
(−0.3)
48.1
(8.9)
Average precipitation inches (mm) 3.15
(80)
2.70
(69)
3.87
(98)
3.62
(92)
3.81
(97)
3.80
(97)
4.65
(118)
3.56
(90)
4.21
(107)
3.44
(87)
3.27
(83)
3.62
(92)
43.70
(1,110)
Average relative humidity (%) 65.3 60.7 57.6 57.2 60.8 62.7 64.4 65.8 67.8 67.3 65.3 65.1 63.4
Average dew point °F (°C) 23.3
(−4.8)
24.2
(−4.3)
29.7
(−1.3)
39.5
(4.2)
50.3
(10.2)
60.2
(15.7)
65.3
(18.5)
64.5
(18.1)
58.4
(14.7)
47.3
(8.5)
37.2
(2.9)
27.5
(−2.5)
44.0
(6.7)
Source: PRISM

See also

Kids robot.svg In Spanish: Condado de Delaware (Pensilvania) para niños

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